Defn: The period of forty days during which the widow had the privilege of remaining in the mansion house of which her husband died seized. Quarantine flag, a yellow flag hoisted at the fore of a vessel or hung from a building, to give warning of an infectious disease; — called also the yellow jack, and yellow flag.

QUARANTINE
Quar`an*tine", v. t. [imp. & p. p. Quarantined; p. pr. & vb. n.
Quarantining.]

Defn: To compel to remain at a distance, or in a given place, without intercourse, when suspected of having contagious disease; to put under, or in, quarantine.

QUARL
Quarl, n. Etym: [Cf. G. qualle.] (Zoöl.)

Defn: A medusa, or jellyfish. [R.]
The jellied quarl that flings At once a thousand streaming stings. J.
R. Drake.

QUARREL
Quar"rel, n. Etym: [OE. quarel, OF. quarrel, F. carreau, LL.
quadrellus, from L. quadrus square. See Quadrate, and cf. Quadrel,
Quarry an arrow, Carrel.]

1. An arrow for a crossbow; — so named because it commonly had a
square head. [Obs.]
To shoot with arrows and quarrel. Sir J. Mandeville.
Two arblasts, . . . with windlaces and quarrels. Sir W. Scott.

2. (Arch.)

Defn: Any small square or quadrangular member; as: (a) A square of glass, esp. when set diagonally. (b) A small opening in window tracery, of which the cusps, etc., make the form nearly square. (c) A square or lozenge-shaped paving tile.

3. A glazier's diamond. Simmonds.